cc: Remove code for drawing checkerboard quads, it's not used.

cc/quads/largest_draw_quad.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/quads/largest_draw_quad.h"
 
 #include <algorithm>
 
-#include "cc/quads/checkerboard_draw_quad.h"
 #include "cc/quads/debug_border_draw_quad.h"
 #include "cc/quads/io_surface_draw_quad.h"
 #include "cc/quads/picture_draw_quad.h"
 #include "cc/quads/render_pass_draw_quad.h"
 #include "cc/quads/solid_color_draw_quad.h"
 #include "cc/quads/stream_video_draw_quad.h"
 #include "cc/quads/surface_draw_quad.h"
 #include "cc/quads/texture_draw_quad.h"
 #include "cc/quads/tile_draw_quad.h"
 #include "cc/quads/yuv_video_draw_quad.h"
 
 namespace {
 const size_t kLargestDrawQuadSize =
     sizeof(cc::RenderPassDrawQuad) > sizeof(cc::StreamVideoDrawQuad)
         ? sizeof(cc::RenderPassDrawQuad)
         : sizeof(cc::StreamVideoDrawQuad);
 }  // namespace
 
 namespace cc {
 
 size_t LargestDrawQuadSize() {
   // Currently the largest quad is either a RenderPassDrawQuad or a
   // StreamVideoDrawQuad depends on hardware structure.
 
   // Use compile assert to make sure largest is actually larger than all other
   // type of draw quads.
-  static_assert(sizeof(CheckerboardDrawQuad) <= kLargestDrawQuadSize,
-                "Largest Draw Quad size needs update. CheckerboardDrawQuad is "
-                "currently largest.");
   static_assert(sizeof(DebugBorderDrawQuad) <= kLargestDrawQuadSize,
                 "Largest Draw Quad size needs update. DebugBorderDrawQuad is "
                 "currently largest.");
   static_assert(sizeof(IOSurfaceDrawQuad) <= kLargestDrawQuadSize,
                 "Largest Draw Quad size needs update. IOSurfaceDrawQuad is "
                 "currently largest.");
   static_assert(sizeof(PictureDrawQuad) <= kLargestDrawQuadSize,
                 "Largest Draw Quad size needs update. PictureDrawQuad is "
                 "currently largest.");
   static_assert(sizeof(TextureDrawQuad) <= kLargestDrawQuadSize,
                 "Largest Draw Quad size needs update. TextureDrawQuad is "
                 "currently largest.");
   static_assert(sizeof(SolidColorDrawQuad) <= kLargestDrawQuadSize,
                 "Largest Draw Quad size needs update. SolidColorDrawQuad is "
                 "currently largest.");
   static_assert(sizeof(SurfaceDrawQuad) <= kLargestDrawQuadSize,
                 "Largest Draw Quad size needs update. SurfaceDrawQuad is "
                 "currently largest.");
   static_assert(sizeof(TileDrawQuad) <= kLargestDrawQuadSize,
                 "Largest Draw Quad size needs update. TileDrawQuad is "
                 "currently largest.");
   static_assert(sizeof(YUVVideoDrawQuad) <= kLargestDrawQuadSize,
                 "Largest Draw Quad size needs update. YUVVideoDrawQuad is "
                 "currently largest.");
 
   return kLargestDrawQuadSize;
 }
 
 }  // namespace cc